2891748857720 has 32 divisors (see below), whose sum is σ = 6506585895600. Its totient is φ = 1156672704768.

The previous prime is 2891748857693. The next prime is 2891748857729. The reversal of 2891748857720 is 277588471982.

2891748857720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2891748857720² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891748857729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 954116 + ... + 2587244.

Almost surely, 2^{2891748857720} is an apocalyptic number.

2891748857720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2891748857720 is an abundant number, since it is smaller than the sum of its proper divisors (3614837037880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2891748857720 is a wasteful number, since it uses less digits than its factorization.

2891748857720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677407 (or 1677403 counting only the distinct ones).

The product of its (nonzero) digits is 126443520, while the sum is 68.

The spelling of 2891748857720 in words is "two trillion, eight hundred ninety-one billion, seven hundred forty-eight million, eight hundred fifty-seven thousand, seven hundred twenty".